Similar story. My mind was in fragments from diseases. Vit D in low teens. Started high level vit D at start of Covid Brain function is approaching my old l

Similar story. My mind was in fragments from diseases. Vit D in low teens. Started high level vit D at start of Covid Brain function is approaching my old levels. Now I take a lot of supplements, so it’s always tricky to pin it down. But so far so goods.